Higher cetane = higher mileage??
Posting Guru
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No experience with a powerstroke but dad had about an average of a strong 1 mile per gallon average increase on his duramax using standyne. just food for thought and he even claims it added a little more low end power but i couldn't tell much if any. i think the thought of it added more power 
Posting Guru
Joined: Mar 2004
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From: Valdez, Alaska
Looks like I will have to make an effort to use Powerservice more often. Kinda curious what our diesel is rated at. I always get better milage from Anchorage to Valdez 18-21 driving conservative and 16-19 the other way. Those are my averages with my summer tires. Winter tires drop by 1-2. 320 mile one way so I just wait until I get at either end unless it is sub-zero the I dont like to let my tank get below 1/2. Those of course are very conservative driving habits. I am usually doing the drive over, shop and drive back so I am usually not to conservative on the driving.
So Daryl if 40 is the minimum would, let say 45 be an average and 48 be in the higher range? Just curious to see what our refinery has here versus Anchorage.
So Daryl if 40 is the minimum would, let say 45 be an average and 48 be in the higher range? Just curious to see what our refinery has here versus Anchorage.
Last edited by mlb4966; Mar 9, 2005 at 08:48 PM. Reason: Misworded
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
I've noticed a definite difference when using the Powerservice. It's just inconvenient to measure and pour at a service station on long trips. I usually average 2mpg better running concentration to boost cetane 6 points--approx 16oz per 25 gallons of fuel. It's just a benefit of wanting to protect injectors--not necessarily boosting mileage. Just like the 3.5-4" exhaust--wanting to protect from high EGT's not necessarily performance or mileage. I usually average 18 driving 75 to 85 mph from Austin to Little Rock, Ar. It's been less on winter blend diesel, but one can expect that--all the more reason to use an additive. I talked to a diesel fuel rep today and asked about biodiesel. It's coming to Austin soon at a 20/80 ratio. Can't wait to try some as I've heard nothing but GREAT things about this source of energy. Helps the American farmer and lessens our dependance on foreign oil.
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Joined: Jan 2005
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From: belle chasse,louisiana
mileage and power
how are ya'll doing just wanted to jump in and get some input, my mpg sucks i have a 2005 250 4x4 6.0l, only gets 14 hwy not towing towing a 14 ft cargo it drops to 10 tried different additives like lucas and anotherthat atruck stopdrivershowed me no change i installed a volant airbox and picked up about 1 mpg not towing my local diesel mechanic /ford dealer mech, said gut the exhaust replace with 3.5 front to back do not install tuner any help would be appreciated
Postmaster
Joined: Aug 2003
Posts: 4,483
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From: Central Texas
Matt is right, Tim. It is already in Austin. A little pricy but at todays dino diesel, it is getting more attractive.
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From: Norco
I also get 14-15 mpg not pulling. I have a '04 F-250 Lariat FX4 CC PSD. I don't have but 5700 miles on the truck. I am about to change my oil for the second time and I plan on going with a synthetic or synthetic blend oil. I have not made up my mind if I am going with Rotella T or Amsoil. I also plan to start using a cetane additive to see if I can get alittle better fuel milage.
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From: 3rd Rock
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Posting Guru
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Octane/cetane ratings are empirical values which measure the ability of the fuel to resist detonation and preignition. A higher octane/cetane value allows an engine designer to run a higher compression ratio/more aggressive timing, because the fuel won't detonate prematurely.
Higher octane/cetane does not directly produce any more power, assuming identical engines. It *does* allow the designer to increase compression/timing, which will produce more power. High octane/cetane is only an enabler... not a direct cause of additional power.
Higher octane/cetane does not directly produce any more power, assuming identical engines. It *does* allow the designer to increase compression/timing, which will produce more power. High octane/cetane is only an enabler... not a direct cause of additional power.
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tvsjr, Im not very smart when it comes to diesels or diesel fuel but have built some snowmobile race engines. We take compression ratio and relate it to the fuel we need be it 110-114 or 118 octain rating. Now I know if you run any of these fuels in stock snowmobile it wont run very well. Are the 6.0s a certain compression(dont know what it is)that a better cetane rating would be a better burn? I see the additives bring up cetane rating and advertise quicker starts, if cetane rating is brought up wouldnt that make a slower burn and not ignite as well espesially in cold weather?